Home / 91,568.32-126,374.70-55,779.28

Finding the Fourth Proportional to 91,568.32, 126,374.70 and 55,779.28

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Solution

The fourth proportional to 91,568.32, 126,374.70 and 55,779.28 is: 76,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,568.32 : 126,374.70 = 55,779.28 : x
  2. Step 2: Convert to fraction form
    91,568.32/126,374.70 = 55,779.28/x
  3. Step 3: Cross multiply
    91,568.32x = 126,374.70 × 55,779.28
  4. Step 4: Simplify right side
    91,568.32x = 7,049,089,776.22
  5. Step 5: Solve for x
    x = 7,049,089,776.22/91,568.32
  6. Step 6: Final answer
    x = 76,981.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.